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David Pautler wrote:
<blockquote cite="mid:48DC90EB.50808@wooden-robot.net" type="cite"><font
face="Tahoma">I'm evaluating Drools and other RMSs, looking for
one that provides the following features:<br>
<br>
1) Citation tracking. I need to note what articles or scenarios
motivated a rule, and be able to provide a short description of how the
rule supports each. This goes beyond commenting because I need to have
access to a list of all articles and scenarios used and be able to jump
to the rules that hang from them.<br>
</font></blockquote>
Not quite sure what you mean, this is an addition you want to the rule
language itself? Can you provide more details, maybe we can help you
work on this.<br>
<blockquote cite="mid:48DC90EB.50808@wooden-robot.net" type="cite"><font
face="Tahoma"><br>
2) Jess rule language. Our team has a symbolic AI background, and
Drools' language is non-intuitive to us. It appears that Drools is
built on Jess, and Jess' language would work much better for us. Is
there a way to use Jess' language, including intellisense support?<br>
</font></blockquote>
Drools is not built on Jess or related to Jess in anyway, other than
that we all have our own implementations of the Rete algorithm and have
followed many of the features implemented in Clips, which itself was
derived from ART. The Drools DRL language itself was designed as a more
intuitive and
less verbose language, this becomes increasinly important as you start
to add more complex syntax which becomes harder to read with a lisp
approach. I think most people in here would agree that the Drools DRL
approach is an improvement over the lisp approach of clips/jess - apart
from the die hard lisp fans.<br>
<br>
That said I have an experimental project to provide some level of clips
support. See this blog for detalis:<br>
<a class="moz-txt-link-freetext" href="http://blog.athico.com/search/label/Clips">http://blog.athico.com/search/label/Clips</a><br>
<br>
Drools was designed from the start to work with pojos, Jess has an
internal data structure that the pojos must be copied into. For this
reason our performance compared to Jess when working with pojos is
atleast double. Drools 5.0 also has a new more robust Rete algorithm,
that is not subject to inconsistencies affecting modify and retract, we
call this assymetrical Rete, rather than Jess' symmetrical Rete.
Further to this our Rete supports partitioning for parallel evaluation,
which was needed for our CEP work.<br>
<br>
Drools 5.0 will also have so many more features than Jess, that Jess is
no longer really any competition. The main feature additions will be
temporal reasoning support for CEP. And a powerful web based BRMS. See
M1 release notes for details of CEP:<br>
<a class="moz-txt-link-freetext" href="http://blog.athico.com/2008/07/drools-50-m1-new-and-noteworthy.html">http://blog.athico.com/2008/07/drools-50-m1-new-and-noteworthy.html</a><br>
<br>
<br>
<blockquote cite="mid:48DC90EB.50808@wooden-robot.net" type="cite"><font
face="Tahoma"><br>
3) Export to sourceforge. Our deployments involve exporting the
rulebase and associated citation tracking to sourceforge or google
code. That is, we want to deploy text rather than binaries. Is there a
better way to do this than a simple db export?<br>
<br>
I've checked the user manuals and list archives for each of these
questions but wasn't able to answer them for myself.<br>
</font></blockquote>
Again not really sure what you are discussing, wouldn't just putting
the .drl up at sourceforce achieve this?<br>
<br>
Btw if you do continue your research on Drools, I would encourage to
put your details and your research up on the Drools Research Network
page, and also join the mailing list: We have a student working on
uncertaintity at the moment, his work is being presented at RuleML08
this year, this should be of interest to many people in research.<br>
<br>
<a class="moz-txt-link-freetext" href="http://www.jboss.org/drools/research-network.html">http://www.jboss.org/drools/research-network.html</a><br>
<br>
Mark<br>
<blockquote cite="mid:48DC90EB.50808@wooden-robot.net" type="cite"><font
face="Tahoma"><br>
David<br>
</font>
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</blockquote>
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